Machine fills up with water then when its suppose to agitate it just stops working will turn timer & push knob in & out & reset then it will work

The burnt plastic smell is probably the belt that drives the agitator. There may be something stuck (wrapped) around the shaft under the agitator that tightens the gears so the belt just slips and heats up. Remove the agitator and make sure the shaft is clear. also if it is belt and gear driven, check the gears. This means removing a panel or turning the unit sideways to inspect from below. The hum is the motor either not turning or turning with the belt too tight.
Hope this helps...

When the cycle doesn't advance, it's probably the timer or a cold-water supply problem:

It's the timer, if your washing machine fills with water and begins agitating, but the timer never advances--or if the washer is in a spin cycle and the timer won't advance. Then you need to replace the timer.

It may be a cold-water supply problem, if the washing machine fills with water, agitates, drains, and spins, but then doesn't fill with rinse water. See There's no cold water.

you need to replace the water level switch

Please be carful as running the agitator without enough water will overheat and kick out the motor, however it should be ok when it resets itself.
Yes, the machine should stop agitating when you lift the lid so this too is part of the problem.
After looking at the print I can only suggest that the cam contacts in the timer ( contacts 12 and 14) that start the motor are burned and stuck together.
Quentin

sounds like your water level switch is bad OR the small hose that goes from the waterlevel switch to the bottom of the tank has a hole in it.Try replacing this small hose first.you can go to an auto parts store and match it up.it's usually about 3' long and about 1/4" inside diameter and about 99cents a foot.

yes, timer, it has a tooth chipped and can not advance to next cycle. That is why when you turn knob just slightly it restarts.

Check your pump and drain for a blockage.
You also could have a timer connection issue. Remove the timer wire connectors and reattach them.The timer simply has a quick connection block, sometimes they get a little loose and all you gotta do is push it all the way back in. Check for a loose lid hinge and safety switch also.

yes this sounds like a timer it sounds like it is getting stuck in the cycle. replace the timer and this will clear up the problem

that is either a problem with the timer , or with the cold water hose at the back of the machine, see the following:



I quote from : The cycle doesn't advance

The cycle doesn't advanceWhen the cycle doesn't advance, it's probably the timer or a cold-water supply problem:

It'sthe timer, if your washing machine fills with water and beginsagitating, but the timer never advances--or if the washer is in a spincycle and the timer won't advance. Then you need to replace the timer.

Itmay be a cold-water supply problem, if the washing machine fills withwater, agitates, drains, and spins, but then doesn't fill with rinsewater. See There's no cold water.

replace water inlet solenoid first if this doesnt work replace timer